<template>
    <div id="app">
        <router-view></router-view>
    </div>
</template>

<style lang="scss" scoped>
// 定义变量
$bgc: blue;

.father {
    width: 200px;
    height: 200px;
    background-color: $bgc;

    .son {
        width: 100px;
        height: 100px;
        background-color: green;
    }
}
</style>
